Hydrogen and Cushion Gas Adsorption-Desorption Dynamics on Clay Minerals.

ABSTRACT: Transitioning toward a hydrogen (H₂)-centric energy paradigm necessitates understanding the adsorption properties of clay minerals, essential constituents of reservoirs and caprocks, for efficient geological H₂ storage. This study examines the adsorption characteristics of H₂ on various clay minerals (montmorillonite, illite, chlorite, kaolinite, and sepiolite) at different temperatures and the adsorption of cushion gases (N₂, CH₄, and CO₂) under reservoir conditions (313.15 K, up to 10 MPa). The results indicate that sepiolite demonstrates superior adsorption capacity under all tested conditions, surpassing montmorillonite by over 12 times at 313.15 K for H₂. Illite, chlorite, and kaolinite exhibit negligible H

SUBMITTER: Zhang Q 

PROVIDER: S-EPMC11472264 | biostudies-literature | 2024 Oct

REPOSITORIES: biostudies-literature